Motor mounting



Feb. 19, 1929.

' E. Q. BANGS ET AL MOTOR MOUNTING Filed May 1926 Patented Feb. 19,1929.

UNITED STATES,

PATENT OFFICE.

EDWIN Q. BANGS AND WILLIAM ERNST, OF RACINE, WISCONSIN, A SSIGNORS TOHAM- ILTON BEACH MFG. (30., OF RACINE, WISCONSIN, A. CORPORATION OFWISCONSIN.

MOTOR MOUNTING.

Application filed May 5,1926. Serial No. 106,978.

This invention relates to improvements in motor mountings, adapted forthe attachment of electric motors to sewing machine heads to hold themotor pulley wheels in frictional engagement with the sewing machinehand wheels;

It is one of the objects of the present invention to provide a motormounting for sewing machine heads arranged tothrow the motor into or outofengagement with. the

machine hand wheel.

A further object of the invention is to provide a motor mountingarranged to be locked in any adjusted position and away from the handwheel, if desired to permit bobbin winding.

A further object of the invention is to provide a motor mounting oftheclass described which is of very simple construction, is easilysecured to a sewing machine head, is strong and durable, and is welladapted for the purpose described.

l Vith the above and other objects in view,

the invention consists of the improved motor mounting and its parts andcombinations as set forth in the claim, and all equivalents thereof.

In the accompanying drawing in which the same reference charactersindicate the same parts in all of the views Fig. 1 is an end view of asewing machine head equipped with the improved motor mounting and motorheld thereby;

Fig. 2 is a side view thereof;

Fig. 3 is a view similar to Fig. 2 only showing the mounting and motorin an adjusted position of disengagement.

Refcrringnow more particularly to the form of the invention shown inFigs. 1, 2 and 3 of the drawing, a sewing machine head is indicated bythe numeral 8. and the same has a rcvolubly mounted hand wheel 9.

The. side portion of the head is formed with a flattened portion 10against which the upper portion of a vertical plate member 11 is securedby screws 12. The lower portion of said plate member 11 is off-setoutwardly and rounded as at 18 and its outer surface is provided withserrations or teeth 14.

Adapted for adjustable attachment to the "plate member 11, is acomplementary plate member 15, widened at its upper portion to permitthe attachment thereto of a flat type electric motor 16 by screws 17.The lower portion of said platemember is also rounded and its inncr'faceis formed with serrations 18 to engage the serrations 14. A screw 19 isthreaded through the serrated engaging portions of the members 13 and 15to permit their being clamped in adjusted position.

The normal position of the device is as shown in Figs. 1 and 2 with themotor carrying plate 15 clamped in a vertical position, so that themotor pulley wheel 20 engages the hand wheel 9 to frictionally drive thesame.

When it is desired to disengage the pulley wheel from the hand wheel,the screw 19 is loosened so that the member 15 may be turned to eitherside of its vertical center line and there clamped, as shown in Fig. 3.In this position, the hand wheel-is free for bobbin winding.

From the foregoing description, it will be seen that the improved motormounting for sewing machine heads is of very simple and novelconstruction, and is well adapted for the purpose set forth.

What is claimed as the invention is:

The combination with a sewing machine head having a motor mounting onone side of the base of said head, and a hand wheel journaled in saidhead, of a motor having a friction'wheel to drive said hand wheel, platehaving parallel end portions offset with relation to each other, one ofsaid end portions being rigidly secured to said mounting and the otherend portion having a semicircular scrrated face, a second plate securedto-one side of said motor and having a semi circular serrated face atits free end to on the serrated face of said first mentioned plate, ascrew threaded through said plates above said serrated faces andadjustable to clampingly hold the serrated faces of said plates inengagement for driving position, said second plate being freely movableon said first mentioned offset plate upon loosening of said screw, theoffset portion of said first plate serving as a means of disengagingsaid serrated faces during adjustment.

In testimony whereof, we afiiX our signatures.

EDIVIN Q. BANGS. WILLIAM ERNST.

